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Finding the Fourth Proportional to 1,009.36, 1,506.51 and 984.76

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Solution

The fourth proportional to 1,009.36, 1,506.51 and 984.76 is: 1,469.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,009.36 : 1,506.51 = 984.76 : x
  2. Step 2: Convert to fraction form
    1,009.36/1,506.51 = 984.76/x
  3. Step 3: Cross multiply
    1,009.36x = 1,506.51 × 984.76
  4. Step 4: Simplify right side
    1,009.36x = 1,483,550.79
  5. Step 5: Solve for x
    x = 1,483,550.79/1,009.36
  6. Step 6: Final answer
    x = 1,469.79

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.